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Target of diploma thesis The Operating Point of the Centrifugal Pump was create program for analyze system of pumps, it would be an effective instrument at projection these systems. Program is divided into two parts: system characteristic and performance characteristic. Subject of this thesis is create pumps database, enter performance characteristics and succeeding working with them. Program enable regulation pump with change speed and cooperation two pumps, work in parallel or series. The result of program is project system of pumps on enter parameters with more economy work.

The goal of this work was the engineering of a new machine for pressing the cataract into the injection pump VP30 housing. Based on criteria from the point of view of ergonomics, assembly, shape of the housing and costs, the machine has been engineered so as to clamp the pump housing and press the cataract into the appropriate housing channel. Machine designing has been performed using 3D CAD software which is able to provide drawings and 3D data.

The aim of my diploma thesis is to create a computer program that will help planners to design pipe systems. The program enables to find the parameters of a pumping unit (such as flow, head, power, efficiency, dissipation etc.) in a parallel pipe system which even has two tanks with dissimilar height. Moreover, the program is able to “calculate” the parameters of pumps that have maximum efficiency so that the planner could easily compare the data and determine whether the pump is working near the optimal point. The introduction includes a short overview of issues connected with pumping equipment. The next part deals with a description of software solutions of individual problems. The thesis concludes with a manual of the designed computer program.

Renewable energy sources are currently at their maximum capacity, but this does not mean that they are slowing down in growing. The first part of the thesis is focused on the issue of renewable resources in the countryside at a general level. The second part is focused specially on the territory of Jablunkov and the possibility of using individual sources of renewable energy in this area. Three of the most suitable sources have been chosen for practical realization options, including economic calculations, these include both fixed costs and operational costs. Calculations were made using the so-called „Kotlíková kalkulačka“, the Photovoltaic Geographical Information System and Microsoft Office. Part of the thesis is also an assessment of the ecological and social aspects of renewable resources, including their impact on the use of the territory itself and the impact on the landscape. The results clearly show up the benefits of new technologies in both economic and environmental terms, and provide space for further use of renewable energy sources, whether in rural areas or in cities. Economically, the purchase of a heat pump is the best choice, the possibility of building new jobs is mainly provided by using of biomass. The thesis should serve as support for an even greater use of renewable energy, or in the decision making progress in choosing the most suitable alternative of renewable energy source for a family house.

The aim of the diploma thesis is to design the pump impeller. The classical design of the impeller is made for one operating point, in which pump is assumed to operate most of the time. The aim of this diploma thesis is to design a pump, whose pump cover and pump drive discs are designed for each other operating point and then compare the results of both design methods.

This work includes design of the drive hydraulic shears. The objective is to replace diesel-engine for electric motor. There is a description of the machine and its technological shearing process, types of hydraulic drives and their applications. The work includes the design, description and calculation of hydraulic power unit with an electric motor in two versions. Then there is evaluation of alternatives and select one to which they are processed further structural elements.

Even today, there may be differences between the various facilities of fire protection in the field of portable pumps. Some units have a new and technically compliant mobile pumps, others have older portable pumps or even none. My primary interest was the current state of condition and technical level of the individual pumps. The Pumps and the issue of fire protection are mentioned in the first part. There is described a legal framework defining competencies, division, as well as the working of each fire protection units. Information on the various types of water pumps used not only in fire protection, working principles and specifics of mobile water pumps are also described here in a retrieval of information resources. The second part, which is my own research, is analysis of condition of mobile water pumps on selected sample of fire protection units from the region of Liberec. This practical task was realized by my myself questionnaires that I sent out to chosen fire protection units. Additional information was acquired thanks to personal interviews with representatives of the units. My field of interest was the quality of condition of mobile water pumps. The finally condition depends on the fact if the fire units own the pumps and their technical level. The monitored parameters were old pumps, maximum power, maximum discharge height, weight and maximum flow rate of the pump. The quality of the conditions of mobile water pumps of fire protection units was evaluated by using my own modification of operational analysis. The index of condition as a unique identifier was the outcome of the evaluation. The hypothesis The condition of mobile water pumps of chosen fire protection units corresponds today's technical possibilities - had prescientific character and it was formulated intuitively. The hypothesis also contained expectations of high and technically adequate condition of mobile water pumps of chosen fire protection units. Basis for the hypothesis flowed from the experience of recent years, when the fire brigade were gradually upgraded its founders. Based on the results it is possible to confirm the hypothesis and indicate the condition of chosen fire protection units from the region of Liberec as a sufficient because all of them pass the basic limit. To achieve four specific aims of this work the comparison of monitored technical parameters and the number of pumps with limit for condition was used. These aims of the thesis were complete thanks to these methods except one. It was the plan of modernization at the fire protection unit, which does not correspond amenities. Since the confirmation of the hypothesis, which states that mobile pumps amenities for today's technical possibilities, no need to drive to modernize the newer models. You are at least mentioned in the results of the work, and their technical parameters are included in the annex. If we take into account the practical point of view, this work is useful for the Fire Brigade Liberec region, such as document monitoring conditions of mobile water pumps of chosen fire protection unit from Liberec region.

The purpose of the diploma thesis is to establish on survey of swirl pump from previous years and his optimization via which is suggested the second degree of synchronous pump whereas they should work together like a total artificial heart. Hydraulic and constructional proposal is solved. Conception is realized experimentally also with help of CFD calculation, results are compared with each other.

This diploma thesis summarizes the necessary knowledge for the design of the pump station. It focuses on the choice of suitable pumps and control valves. It also provides information on mathematical optimization methods. By combining these two disciplines a program was created that selects the most suitable combination of pumps and valves for the assigned requirements. These can vary over time. The goal of optimization is to minimize initial and operating costs. The phenomena considered are: time-varying flow and head height, serial and parallel co-operation of pumps, throttling control, a change of characteristics for variable speed and temperature, suction height control, maximum motor output, loss in connection piping.